Hubbell 15A & 20A Products & Dockside Boxes

Hubbell 15A & 20A Shore Power for the Dock

Light-duty shore power is the backbone of many small-boat setups, from bass boats keeping batteries topped off to runabouts and skiffs running a charger or a few onboard conveniences. Hubbell's Wiring Device-Kellems line addresses this need with marine-grade 15A and 20A devices designed for the wet, salty conditions found at docks, boatyards and marinas. This page focuses on that 15A and 20A range and the dockside boxes that house it.

Built for Corrosion and Moisture

Hubbell describes its corrosion-resistant Twist-Lock® devices as dependable, heavy-duty performers for ship-to-shore use, with plugs, connectors and receptacles offered in 15, 20 and 30 amp ratings. They combine rugged nylon with corrosion-resistant metallic components for secure dockside and boatside connections. That mix matters in practice: standard household devices can corrode quickly around moisture and salt, while marine-grade construction is meant to hold up season after season.

The Chem-Marine straight blade receptacles are a good example. A 20A 125V duplex receptacle in the line (HBL53CM62) is a yellow, corrosion-resistant marine wiring device with back and side wired screw terminals, giving installers flexibility when wiring a dock pedestal or utility box.

Inlets, Plugs and Connectors

On the boat side, Hubbell's 15/20 amp straight blade marine shore power inlet (HBL61CM64) is a panel-mount gray nylon unit. It features a gasketed, spring-loaded lift cover to weatherproof the front and a neoprene boot to protect the rear, and it accepts both 15A and 20A 125V straight blade female connectors. It is a popular choice for battery-charging connections on smaller vessels.

The range also includes matching straight blade and Twist-Lock plugs and female connectors, so you can build a complete cord set that suits your dock's receptacle. Locking Twist-Lock configurations add a secure, vibration-resistant connection, while straight blade styles offer familiar compatibility with common 15A and 20A cords.

Dockside Boxes and Code Considerations

Hubbell's marine literature also highlights a UL Listed surface mount box built for code-compliant installation of devices from 15A to 50A, with a metallic ground bonding bracket, threaded conduit hubs and external mounting supports. Another back box option uses a corrosion-resistant gray cast aluminum finish, giving installers a durable home for dockside receptacles. When specifying dockside equipment, remember that the NEC calls for 125V and 250V, 15A and 20A receptacles in wet locations to be listed weather resistant, and tamper-resistant devices are required in many applications. Confirming those listings is a smart step in any marina or residential dock project.

Choosing the Right Components

• Match amperage and configuration: make sure the plug, connector, inlet and dockside receptacle share the same rating and blade or locking pattern.
• Protect the connection: weatherproof covers, boots and gasketed lids help keep water out of live contacts.
• Plan the enclosure: pair receptacles with a box suited to the mounting surface and conduit layout.

To see everything Hubbell makes beyond this range, visit the Hubbell brand page. For a wider look at the product type, including other manufacturers, browse the full 15A & 20A Products & Dockside Boxes category.